Fusible link question (1 Viewer)

[orthodoc]

I have installed a 24v 70 ampere alternator to my 13BT. I changed the alternator wire going directly to battery positive terminal, i used guage 8-wire.

What amperage rating should i use for fusible link?
Where should i connect the fusible link after the alternator line or before the battery positive line?

The battery positive cable goes directly to the starter without fusible link, is it ok to put a fusible link before the starter?

 

[SteelArt]

I have installed a 24v 70 ampere alternator to my 13BT. I changed the alternator wire going directly to battery positive terminal, i used guage 8-wire.

What amperage rating should i use for fusible link?
Where should i connect the fusible link after the alternator line or before the battery positive line?

The battery positive cable goes directly to the starter without fusible link, is it ok to put a fusible link before the starter?

I wouldn't put a fusable link anywhere on thise wires. The Alt to Battery or the Battery to Starter are usually heavy guage un fused wires due to amp draw under use. That is the case with most cars I have ever seen.

 

[Radd Cruisers]

The alternator should always have a fusible link in-line, nearest to the battery. Consult a table for the fusible link requirement. Fusible links are usually measured in wire cross sectional (mm^2) area and not gauge.

All modern (and even most pretty ancient cars) have fuses or fusible links for the power lead to the alternator as well as all other loads except the starter main lead.

The main wire to the starter does not get a fusible link. The wire to the starter should be protected with some form of split loom or other protection from chaffing.

~John

 

[orthodoc]

The alternator should always have a fusible link in-line, nearest to the battery. Consult a table for the fusible link requirement. Fusible links are usually measured in wire cross sectional (mm^2) area and not gauge.

All modern (and even most pretty ancient cars) have fuses or fusible links for the power lead to the alternator as well as all other loads except the starter main lead.

The main wire to the starter does not get a fusible link. The wire to the starter should be protected with some form of split loom or other protection from chaffing.

~John

ok thanks, what type of fusible link would you recommend for cable going to battery. I couldnt find fusible link wire type, the only available is the fusible link similar to an ordinary fuse?


I read on the other thread that your fuse link amperage rating should be 150% higher than ampere of your alternator ( im referring to fusible link that looks like an ordinary fuse),

and if you are using fusible link wire should be 4 guage lower than the wire it protects

I have 70 ampere alternator 24v, is it ok if i put 140 ampere fusible link before the battery?

or should i only put 80 to 100 amp fusible link for my 70 ampere alternator?

 

[Radd Cruisers]

I would rate the fusible link based on the current output of the alternator, since the wire gauge you used is capable of carrying far more than 70 A.

~John

 

[orthodoc]

I would rate the fusible link based on the current output of the alternator, since the wire gauge you used is capable of carrying far more than 70 A.

~John

Thanks, yes the guage 8 wire is capable of carrying this 70 ampere alternator.

I just want to protect the battery and its line going to the dash just in case there is a short circuit in the alternator or it overcharged the battery, i want to put a fuse before the battery, just dont know what amperage rating. other thread would say it should be 150% higher than my alternator ampere, and if i use wire type fusible link it should be 4 guage lower than my cable from alternator going to battery positive terminal.
some would say that if my alternator is 70 ampere i shoild put fuse just 100 ampere.

Im just confused with the amperage rating.